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Illuminating device

a technology of illumination device and light source, which is applied in the direction of semiconductor devices for light sources, lighting and heating apparatus, transportation and packaging, etc., can solve the problems of reducing operation life, slow heat dissipation, and relative small thermal conductivity coefficien

Inactive Publication Date: 2011-09-06
FOXSEMICON INTEGRATED TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enhances heat dissipation efficiency, maintaining light intensity and extending the operational life of the LEDs by effectively transferring heat away from the device.

Problems solved by technology

However, the air has a relatively small thermal conductivity coefficient, and, as such, heat dissipation is slow.
Eventually, the heat accumulated around the illuminating device will influence the light intensity of the LED, thereby reducing the operation life thereof.

Method used

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Examples

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Embodiment Construction

[0009]Referring to FIG. 1, an illuminating device 10 in accordance with an exemplary embodiment includes at least one light source 11, a circuit board 12, and a thermoelectric cooler (TEC) 13.

[0010]In the present embodiment, the at least one light source 11 consists a plurality of LEDs. The plurality of LEDs is selected from the group consisting of white LED, green LED, red LED, and blue LED.

[0011]The circuit board 12 includes a first surface 120 and a second surface 122 facing away from the first surface 120. The plurality of light sources 11 is electrically attached to the first surface 120 of the circuit board 12. In the present embodiment, the circuit board 12 is a ceramic substrate printed board. In alternative embodiments, the circuit board 12 can be a glass fiber board.

[0012]In the present embodiment, the TEC 13 includes a condensation section 131, a first evaporation section 132a and a second evaporation section 132b. The first evaporation section 132a and the second evapora...

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PUM

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Abstract

An illuminating device includes a circuit board, a light source, and a thermoelectric cooler. The circuit board has a first surface and a second surface at an opposite side of the circuit board to the first surface. The light source is electrically mounted on the first surface of the circuit board. The thermoelectric cooler is attached on the second surface of the circuit board.

Description

TECHNICAL FIELD[0001]The present invention relates to a illuminating device.DISCUSSION OF RELATED ART[0002]At present, cold cathode fluorescent lamps and light-emitting diodes (LEDs) are popularly used as illuminating devices.[0003]Generally, heat produced by the illuminating device can be transferred via air convection and dissipated into the external environment. However, the air has a relatively small thermal conductivity coefficient, and, as such, heat dissipation is slow. Eventually, the heat accumulated around the illuminating device will influence the light intensity of the LED, thereby reducing the operation life thereof.[0004]Therefore, what is needed, is an illuminating device having high heat dissipation efficiency.SUMMARY[0005]An illuminating device includes a circuit board, a light source, and a thermoelectric cooler. The circuit board has a first surface and a second surface at an opposite side of the circuit board to the first surface. The light source is electrically...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): F21V29/00
CPCF21V29/54F21K9/00F21Y2101/02F21Y2115/10
Inventor LAI, CHIH-MINGJIANG, WEN-JANG
Owner FOXSEMICON INTEGRATED TECH INC